user
Suggest a way that I can make my car more fuel efficient.
assistant

There are several ways to make your car more fuel efficient. First, driving with a light foot can reduce the amount of fuel used by up to 30%. Additionally, regular maintenance on your car (such as keeping the oil and air filters clean, properly inflated tires and checking the engine's air and fuel systems) can improve your car's fuel efficiency up to 5%. Moreover, using the right grade of motor oil for your car and using cruise control can also improve your car's fuel efficiency. Finally, using a gas-saving device can help reduce fuel consumption.